Gmail's Sender Contact Form: When a Mitigation Request Can Help

Gmail's sender contact form can help if you already meet every one of Google's sender guidelines and your mail is still landing in spam or being rejected. If you don't meet them, Google says it won't provide mitigation at all, and bulk senders with a user-reported spam rate above 0.3% stay ineligible until it has been below 0.3% for 7 consecutive days. Fix the cause first, wait for Postmaster Tools to show it, then submit once.

A recent r/Emailmarketing thread asked whether anyone had actually got Gmail placement back by using the form. The honest answer from Google's own pages (read 2 November 2026) is: sometimes, and only after the basics are right.

Who's eligible

From Google's sender guidelines FAQ:

• "Starting in February 2024, we won't provide mitigation for email delivery issues to senders that don't meet the guidelines."
• "Beginning June 2024, bulk senders with a user-reported spam rate greater than 0.3% will be ineligible for mitigation."
• "Bulk senders will be eligible for mitigation when their spam rates remain below 0.3% for 7 consecutive days."
• Senders whose unsubscribe link has been unavailable for an extended period aren't eligible either.

So before the form, check the requirements one by one. Our Gmail and Yahoo bulk sender requirements post lists them; the bulk sender checker tests a domain's SPF, DKIM, DMARC and unsubscribe setup.

What the form asks for

The sender contact form itself:

• Recommends a different route first: "We recommend you submit your request in the Postmaster Tools Report delivery issues form" so you can track it.
• Issue type: messages incorrectly classified as spam or phishing, SMTP temp-fails or rejects, or other.
• A short summary and a detailed description.
• Full message headers from a message less than 12 days old (in Gmail: Show original).
• Timing: "Please allow at least 2 weeks between submissions for the changes, if any, to propagate."
• How it's judged: "Requests for mitigation are reviewed against a set of objective criteria and thresholds."
• Low-volume senders may need to generate Postmaster Tools dashboards before requesting mitigation.

Before you submit

1. Check Postmaster Tools. Spam rate, domain reputation and the compliance status dashboard. Google says these are "calculated and updated daily". Our Postmaster Tools guide explains each dashboard.
2. Get the spam rate under 0.3% and keep it there for a week. Usually that means stopping the segment that's generating reports: old contacts, imported lists, people who didn't expect the mail.
3. Clean the list. Bounces to dead addresses and old, recycled addresses feed the same reputation. Verify on the verify page before you restart.
4. Pick a recent, representative message for the headers, sent after the fixes.
5. Describe what changed in plain terms: what was wrong, what you stopped, what you changed and when.

When the form won't help

• Cold email from a new domain. That's reputation building, not misclassification. See warm-up done, still landing in spam.
• A 421 low-reputation deferral caused by your own sending; see Gmail 421 4.7.0 low reputation.
• Repeated submissions. Changing things and resubmitting every few days resets the clock; see the deliverability panic loop.

Where SimpleVerifier fits

Verification removes invalid, disposable and dead-domain addresses before a restart, which is one of the inputs to the reputation Google measures. It can't lower complaints from people who didn't want the mail, and it doesn't talk to Google for you. The first 100 checks are free with a Google sign-in on the verify page. Pro is $39 a month with the first 100,000 checks a month at full speed, then slower, never cut off, and one-time packs of 10,000 checks for $15 never expire. See pricing.